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ICF-C121 SERVICE MANUAL US Model Canadian Model Ver 1.2 1999. 11 E Model With SUPPLEMENT-1 (9-925-799-81) With SUPPLEMENT-2 (9-925-799-82) SPECIFICATIONS FEATURES FM/AM CLOCK RADIO MICROFILM...
DE FONCTIONNEMENT. NE REMPLACER CES COM- SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- POSANTS QUE PAR DES PIÈCES SONY DONT LES LISHED BY SONY. NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SECTION 3 DIAL POINTER SETTING Note: Follow the assembly procedure in the numerical order given. 7 Turn CV1 and RV1 shaft in the arrow direction fully. 8 RADIO board 2 Set the pointer to the guide line. RADIO board (Conductor Side) 3 chassis screw (P3 ×...
SECTION 4 ELECTRICAL ADJUSTMENTS [FM] • Adjusting Location: RADIO board (Component Side) Setting: L1: AM TRACKING CT3:FM TRACKING BAND switch: FM ADJUSTMENT ADJUSTMENT FM RF SSG level meter T1:AM IF CT1:AM TRACKING ADJUSTMENT ADJUSTMENT 0.01 µ F – ± 22.5 kHz frequency speaker terminal deviation by 400 Hz signal...
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ICF-C121 SECTION 5 DIAGRAMS 5-1. PRINTED WIRING BOARDS • Semiconductor Location Ref. No. Location D101 D201 D202 D203 D204 D205 IC101 LED101 Q201 Q202 Note on Printed Wiring Boards: • X : parts extracted from the component side. • Y : parts extracted from the conductor side.
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ICF-C121 5-2. SCHEMATIC DIAGRAM • IC Block Diagram IC1 CXA1019S Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF • U : B+ Line. 50 WV or less are not indicated except for electrolytics •...
SECTION 7 SECTION 6 RADIO EXPLODED VIEW ELECTRICAL PARTS LIST NOTE: NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they The components identified by • Due to standardization, replacements in the •...
RADIO Ref. No. Part No. Description Remark 1-216-057-00 METAL CHIP 2.2K 1/10W R101 1-216-105-00 METAL GLAZE 220K 1/10W R102 1-216-097-00 METAL GLAZE 100K 1/10W R103 1-216-097-00 METAL GLAZE 100K 1/10W R104 1-216-089-00 METAL GLAZE 1/10W R105 1-216-081-00 METAL CHIP 1/10W R204 1-216-009-00 METAL CHIP 1/10W...
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ICF-C121 US Model Canadian Model SERVICE MANUAL E Model 1999. 06 SUPPLEMENT-1 File this supplement with the service manual. Subject: 1. Addition of Black Model (Canadian Model) 2. Correction (ENG-99004) 1. ADDITION OF BLACK MODEL (Canadian Model) Page Before change After change Ref.
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ICF-C121 US Model Canadian Model SERVICE MANUAL E Model 1999. 11 SUPPLEMENT-2 File this supplement with the service manual. Subject: Addition of Parts (US model only) (Serial No. 1,544,651 and later) (ECN-801622) • DISCRIMINATION – Specification Label – Former Type...
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• PRINTED WIRING BOARD : Changed portion. Page Former Type New Type Location C-G, 1-3 View A • View A Bond SHIELD CASE SOLDER – 2 –...
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• SCHEMATIC DIAGRAM : Changed portion. Page Former Type New Type Location C-G, 5-8 – 3 –...
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ICF-C121 • EXPLODED VIEW Page Before Change After Change Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3679-957-A RADIO BOARD, COMPLETE A-3679-957-A RADIO BOARD, COMPLETE (EXCEPT US) A-3683-137-A RADIO BOARD, COMPLETE (US) • ELECTRICAL PARTS LIST...